EP 0582894 A1 19940216 - Mode field diameter conversion optical fiber.
Title (en)
Mode field diameter conversion optical fiber.
Title (de)
Optische Faser zur Umwandlung des Modenfelddurchmessers.
Title (fr)
Fibre optique pour la conversion du diamètre du champ modal.
Publication
Application
Priority
JP 20240792 A 19920729
Abstract (en)
An object of this invention is to provide a mode field diameter conversion optical fiber which can be processed in a short period of time to have a reduced mode field diameter at a desired portion thereof. The optical fiber according to this invention comprises a core of silica glass having a residual tensile stress, and a cladding surrounding the core and having a lower refractive index than that of the core. The desired portion is heated to relax the residual tensile stress in the core, whereby the optical fiber has a reduced mode field diameter at the desired portion. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
G02B 6/02 (2006.01); G02B 6/14 (2006.01); G02B 6/255 (2006.01)
CPC (source: EP US)
G02B 6/2552 (2013.01 - EP US)
Citation (search report)
- [Y] EP 0447700 A1 19910925 - FUJIKURA LTD [JP]
- [XY] PATENT ABSTRACTS OF JAPAN vol. 14, no. 372 (P - 1091) 10 August 1990 (1990-08-10)
- [A] H. HANAFUSA ET AL.: "Thermally-diffused expanded core fibers for low-loss and inexpensive photonic components", ELECTRONICS LETTERS., vol. 27, no. 21, 10 October 1991 (1991-10-10), ENAGE GB, pages 1968 - 1969, XP000253968
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0582894 A1 19940216; EP 0582894 B1 19971015; AU 4209593 A 19940203; AU 665100 B2 19951214; CA 2101036 A1 19940130; CA 2101036 C 20021105; DE 69314571 D1 19971120; DE 69314571 T2 19980305; JP 3049697 B2 20000605; JP H0651147 A 19940225; US 5446820 A 19950829
DOCDB simple family (application)
EP 93112047 A 19930728; AU 4209593 A 19930721; CA 2101036 A 19930721; DE 69314571 T 19930728; JP 20240792 A 19920729; US 9890893 A 19930729